According to the special needs of users, we can provide 2-layer / 3-layer / 5-layer and multilayer solid wall pipe line. Multiple extruders can be synchronized, and multiple meter weight control system can be selected. can be centralize controlled in a main PLC to achieve precise and quantitative extrusion of each extruder. According to the multi-layer spiral mold designed with different layers and thickness ratios, the distribution of mold cavity flow channels is reasonable to ensure that the tube layer thickness is uniform and the plasticization effect of each layer is better.